I currently run with BS and Engi as my professions. Engi was changed from JC at end of Wrath (kinda regretting now) because I always liked Engi and the toys it brought. However I am thinking of dropping engi as the novelty factors it once procided don't feel exciting anymore. For raids atm the only thing I bring to the raids is Jeeves. While it is a nice little perk thats all it is. A perk.

Now from engi the only self stuff i use is the armor on gloves and absorption on belt. I do not use the Helmets anymore except for some light PvP as i have Both Daybreaker and Dragon Bone tanking and retri specs.

Much as you probably don't want to hear it, I'd suggest taking JC backup again if you are dropping Engineering.The bonus JC gems are decent and work very well with the additional slots provided by blacksmithing.